|Publication number||US7451046 B2|
|Application number||US 10/834,735|
|Publication date||Nov 11, 2008|
|Filing date||Apr 29, 2004|
|Priority date||Apr 29, 2004|
|Also published as||EP1807817A2, US20050246100, US20090134988, US20110163862, WO2005109373A2, WO2005109373A3|
|Publication number||10834735, 834735, US 7451046 B2, US 7451046B2, US-B2-7451046, US7451046 B2, US7451046B2|
|Inventors||Sanjeev Nath, Rajesh Patel|
|Original Assignee||Sanjeev Nath, Rajesh Patel|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (37), Non-Patent Citations (18), Referenced by (3), Classifications (10), Legal Events (1)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The invention is generally related to automatic sensing devices. In particular, the invention is related to a system and method for automatically sensing the distance between objects that are converging to or diverging from each other. More specifically, the present invention involves a system and a method that provide both audible and visual warning of an imminent impact of a moving object with an individual using a personal device.
Present state of the art provides numerous devices and methods for locating, tracking and monitoring the movement of objects in relation to each other. These devices range from determining the relative trajectories of subatomic particles to the plotting the relationship between global positioning satellites to traffic collision avoidance systems used in aviation, such as those described in U.S. Pat. No. 6,690,296, U.S. Pat. No. 6,690,295, U.S. Pat. No. 6,636,752, U.S. Pat. No. 6,525,674 and U.S. Pat. No. 6,356,855, which are incorporated herein in their entirety. However, they are usually complicated and cumbersome to be useful in ordinary daily endeavors.
Monitoring and tracking a moving object is important in many applications. In certain applications, it is desirable to have a tracking device not only to locate the position of the object but also to monitor the movement of the object in real time without any significant delay.
For example, many tracking devices have been developed recently to locate objects that are not in close proximity. Many scanning devices scan for remote objects using radio frequency technology. Any of a number of techniques for locating objects can be readily adapted to locate moving objects. While these devices fulfill their respective particular objectives and requirements, the prior art does not suggest the novel imminent collision warning system disclosed herein.
The present invention advantageously uses state of the art electronic devices in new ways to improve the safety of individuals in their mobile lives. The electronic devices are easily portable and mobile, such as cellular phones, smart phones, personal digital assistants (PDA) and mobile computers. The present invention provides a system that recognizes any one of these popular devices, hereafter referred to as client devices, as carried by individuals or other objects, from a distance in such a manner that when the closure rate of the recognizing safety device and the client device exceed a predetermined set of criteria, the system automatically warns audibly and visually, preferably both parties, of the impending closure, to enable action to be taken to possibly avoid a collision. The system is flexible to meet the needs of the operators of vehicles using the present invention in that a main controller of the system can be configured to set different sizes of safety zones that would set off an alarm when violated, or that the running condition of the engine of the vehicle can be monitored, and also appropriate authorities automatically informed of an event that may require immediate assistance.
An embodiment of the present invention involves an Imminent collision warning system comprising a safety device, the safety device further comprising a main controller, and a display controller. A plurality of client devices communicate with the main controller. Another set of monitoring devices are also capable of communicating with the main controller and the plurality of client devices. The main controller keeps track of the proximity of the plurality of client devices, including other safety devices, and issues timely warnings of an impending collision between the safety device and the plurality of client devices.
An aspect of an embodiment of the present invention comprises a system for: determining the distance between the moving and stationary and/or moving object; using a communication device to transmit a rate of change of the distance between the moving and stationary and/or moving object. The system further provides sensing: the presence of objects in the pedestrian crossing; the presence of objects in the intended path of a vehicle; the movement of objects in an incorrect direction; the movement of objects in an incorrect location; the passing of moving objects through a traffic control device; determining whether the velocity of the vehicle exceeds zero velocity (in any direction); informing the objects if the velocity of the approaching vehicle is greater than zero. The system also provides sensing whether the said objects are not following the appropriate control functions of the traffic control devices; and uses emergency designations for reporting the impending collision.
In another aspect of an embodiment of the present invention, a method is provided for monitoring and supplying a warning of an impending collision between a moving and a stationary and/or moving object. The method provides sensing the presence of an object in the path of a vehicle whether stationary or moving; determining the distance of separation between the vehicle and the said object, determining that the vehicle is moving along a collision path; determining the speed of reduction of distance between the vehicle and said object, the distance approaching a defined zone; generating a warning to an operator of the vehicle as well as to the object on a collision course; sensing an impending event, including an accident; summoning appropriate authorities, including police to the event; and summoning immediate emergency care.
The present invention imminent collision warning system (ICWS) is described in detail below. Figures illustrate the systematic arrangement for providing and maintaining communications between the Main ICWS and the client ICWS, including the use of Intelligent Monitoring Devices (IMD) or Automobile Registry Communication System (ARCS).
Structures of an exemplary IMD. and ARCS are disclosed in pending U.S. patent application Ser. No. 10/704,456 filed on 7 Nov. 2003, and U.S. patent application Ser. No. 10/741,855 filed on 20 Dec. 2003, which are incorporated by reference in their entirety herein. By receiving a request the system can automatically collect the data and other relevant information pertaining to any particular vehicle (e.g. ownership, insurance, licensing etc.)
As would be understood by one of ordinary skill in the art, ICWS can be used in many different situations, e.g., to determine the rapidity of reduction of distance between two objects, to sense the presence of a pedestrian or another object in the pedestrian crossing or in the intended path of a vehicle, to warn a individual about an imminent collision, to sense the presence of an object in the intended path of a vehicle, to sense the movement of an object in an incorrect location or to a vehicle being operated contrary to the rules and regulations in effect.
The front and rear of the movable vehicle 10 is mounted with the sensor beacons 12. The front and rear sensor beacons 12 are connected through connection 14 to the main controller ICWS 11. The main ICWS 11 communicates wirelessly 15 with the client ICWS 17.
The object 18 encompasses individuals with portable devices, children, inattentive or impaired individuals.
The sensor beacon 15 may correspond to a radio frequency, WLAN IEEE 802.11x & 802.16x standards, a Bluetooth, an IR port, a laser technology or an optical technology.
The signal used for transmission can be accomplished via radio frequency, WLAN IEEE 802.11x & 802.16x standards, Bluetooth an IR port, a laser technology or an optical technology, where the wireless 802.11x covers the area of about 3 block, the wireless 802.16x covers the area of about 7 miles, a blue tooth system covers a diameter range of around 330 feet and an “IrDA” infrared red system generally covers less than 5-10 feet with a proper line of sight. This technology as is described in greater detail below
The Bluetooth's native ad-hoc network property makes it very useful by replacing bulky cables, providing printing support or acting as ID cards. The Bluetooth wireless specification includes both link layer and application layer definitions for product developers, which support data, voice, and content-centric applications. Handheld wireless communication devices that comply with the Bluetooth wireless specification operate in the unlicensed, 2.4 GHz radio spectrum ensuring communication compatibility worldwide. These radios use a spread spectrum, frequency hopping, full-duplex signal at up to 1600 hops/sec. The signal hops among frequencies at 1 MHz intervals to give a high degree of interference immunity. Up to seven simultaneous connections can be established and maintained. Further details can be viewed at www.bluetooth.org or www.bluetooth.com.
The Infrared Wireless Adaptor (IrDA) specifications, on the other hand, is intended for high speed short range, line of sight, point-to-point cordless data transfer—suitable for handheld communication devices. Since 1984, “IrDA Data” defines a standard for an interoperable universal two way cordless infrared light transmission data port. IrDA technology is already in over 300 million electronic devices including PC's, PDA's, cellular phones, cameras, toys, watches and many other mobile devices. Main characteristics of IrDA signaling include:
Radiofrequency (RF) is another name for radio waves. It is one form of electromagnetic energy that makes up the electromagnetic spectrum. Electromagnetic energy consists of waves of electric and magnetic energy moving together (radiating) through space. The area where these waves are found is called an electromagnetic field.
Radio waves are created due to the movement of electrical charges in antennas. As they are created, these waves radiate away from the antenna. All electromagnetic waves travel at the speed of light. The major differences between the different types of waves are the distances covered by one cycle of the wave and the number of waves that pass a certain point during a set time period. The wavelength is the distance covered by one cycle of a wave. The frequency is the number of waves passing a given point in one second. For any electromagnetic wave, the wavelength multiplied by the frequency equals the speed of light. The frequency of an RF signal is usually expressed in units called hertz (Hz). One Hz equals one wave per second. One kilohertz (kHz) equals one thousand waves per second, one megahertz (MHz) equals one million waves per second, and one gigahertz (GHz) equals one billion waves per second.
RF energy includes waves with frequencies ranging from about 3000 waves per second (3 kHz) to 300 billion waves per second (300 GHz). Microwaves are a subset of radio waves that have frequencies ranging from around 300 million waves per second (300 MHz) to three billion waves per second (3 GHz).
Basically WLAN is an ordinary LAN protocol, which is a modulated carrier of radio frequency waves. WLAN IEEE 801.11 is a natural extension to LAN Ethernet, and the modulated protocol is IEEE 802.3 (Ethernet 3).
Common WLAN Products, which are using IEEE standards, are based on IEEE 802.11 and 802.11b specification. 802.11b is a high rate extension to the original 802.11, and specific 5.5 to 11 Mbps data rate. The next HyperLAN2 generation using IEEE 802.11a, IEEE 802.11g standards, operates in a new band frequency of 5 GHz, and achieves a high data rate as 54 Mbps. The new networking technology WiMax IEEE 802.16x should provide higher speed, and more coverage than existing Wi-Fi standards.
An intelligent monitoring device (IMD) is located on a roadside installation 20. The device has an onboard central processing unit. The intelligent monitoring device (IMD) has a multi-line liquid crystal display (LCD) panel 22 capable of displaying detailed information related to the process executed, errors and equipment information displayed. The external interface is provided for maintenance purposes, in case equipments need configuration changes or updating the pre-existing applications or their sub modules. The signal processor differentiates between the incoming transmission via signal receiver 21 and outgoing transmission via signal emitter 23.
The three major components comprised of a Main controller 40: a) Processing Application/Application Processor 41; b) Authentication and Sensing Control 42; c) Power supply and External Interface 43. All the components are connected to one another and share the same system bus.
Application program 52 deployed on the computer control system may include the ICWS constructed and configured according to different embodiments of the present invention. All the transactions recorded by the ICWS are stored on an internal storage device 53.
An external interface 62 is provided for external connectivity to the automobile onboard control system or with any other onboard application e.g. ACARS, IMD etc The power adapter 63 provides universal connectivity connector 64 which can be easily interfaced with the main power supply or any other type of auxiliary device e.g. battery, solar panel or any other third party device. The display controller and communication controller are controlled through an input/output (I/O) controller 57. The visual Display interface 58 is a universal connectivity controller and provides a universal connector “Connector II” 59. The same I/O Controller 57 also provides universal connectivity via communication interface 60 and provides a universal connector “Connector III” module 61.
According to the present invention, the control system may detect that the vehicle is in motion through sensors positioned at one or more locations of the vehicle. For example, a motion may be detected because it is sensed that the vehicle velocity is greater than zero (in any direction). Motion may be sensed when it is detected that the park mode of the vehicle is not selected. Motion of vehicle may be sensed when the drive mode is selected or a neutral mode is selected with brakes not fully engaged. Other alternatives to detect the motion of the vehicle may be employed which would be understood by any one of ordinary skill in the art.
The authentication module 56 keeps the authentication track of I/O controller's devices and inters ICWS communication. Also performs the authentication procedure when two of more Main controller or client application is active.
The embodiment describes a client control device that functions as an onboard controller for various sub-functions, including the control of the handheld device used by a stationary or movable object. A microprocessor 101 is provided and interconnected to various other components via a system bus 100. An application program 115 running on the microprocessor 101 provides control and may be used to coordinate the functions of the various components of the control system. The application program 115 is stored in data storage 103. Various application programs for monitoring and control of different functions are stored in read only memory 104. Such stored application programs may be moved in and out of RAM 102 to be executed and to perform their respective functions.
An Output adapter 112 is provided for external connectivity to any other application e.g. CD player, Portable Video player, Cell Phone, PDA, etc. . . . The power adapter 113 is provided with a universal connectivity connector 114 which can be easily interfaced with the main power supply or any type of auxiliary device e.g. battery, solar panel or any other third party device. It can have its own redundant power supply in case the main power supply fails or is intentionally disabled.
A location visualiser unit 108 is provided and interconnected to other components via a system bus 100. A location visualiser 108 provides the spatial relationship with other ICWS devices. The visual interface 108 feeds the data to the onboard display panel 110 via display adapter 109.
The sensor beacon 105 continuously scans for the presence of other ICWS devices within immediate vicinity. As soon as the sensor beacon 105 detects the presence of another ICWS, the beam emitter 106 and beam receiver 107 communicate the data and maintain the quality of the transmission. Based on the information acquired the Alert sensor 111 provides a visual and audio alert message.
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|U.S. Classification||701/301, 701/300, 340/903, 340/436, 340/901|
|International Classification||G06G7/78, G08G1/16, G06F17/10|